皮皮学，免费搜题
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【简答题】
列管换热器的管束由121根 的钢管组成。空气以9m/s速度在列管内流动。空气在管内的平均温度为50 、压强为 (表压),当地大气压为 。试求:(1)空气的质量流量;(2)操作条件下空气的体积流量;(3)将(2)的计算结果换算为标准状况下空气的体积流量。
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皮皮学刷刷变学霸
举一反三
【单选题】Mother ______ me ______ her coat when I was doing my homework. [ ]
A.
filled; with
B.
full; of
C.
covered; with
D.
put; on
【单选题】患者，女性，32岁，颈部甲状腺弥漫性肿大，出现霍纳综合征。该患者发生霍纳综合征的原因是肿大的甲状压迫
A.
食管
B.
气管
C.
喉返神经
D.
颈交感神经节
E.
颈部大静脉
【单选题】My mother is not in very good shape, and has ____ tennis to get fit.
A.
filled up
B.
built up
C.
taken up
D.
set up
【单选题】When their mother died, a great ____ filled their lives.
A.
happiness
B.
richness
C.
friendliness
D.
sadness
【单选题】My mother is not in very good shape, and he has _____ tennis to get fit. [ ]
A.
filled up
B.
built up
C.
taken up
D.
set up
【简答题】“后宫佳丽三千人”的下一句是 。
【简答题】My mother often ( watch ) TV after supper.
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